Share 'Forum discussion threads - what to do when you reach a reply limit'

Bud Poll pointed out to us that a couple of threads lately have become difficult to follow because of a limit to the number of comments in a thread.
The limit is 8 comments threaded below an original comment. Once you hit this limit, the reply button no longer shows up. When this happens, you should move up to the last "reply" button to post your comment and your post will then fall at the bottom…